Canadian County Sheriff’s Office Lt. Adam Flowers specializes in finding them. He arrested 30 men in 2013 alone, and his methods are now becoming a model for other agencies.

“I’ve taken them down in OKC, Oklahoma County. I’ve had them travel all the way from Iowa to meet me,” Flowers said.

Flowers has even arrested two men in one night.

Flowers started building computers at the age of 15. In addition to working full-time behind a computer for the Canadian County Sheriff’s Office, he is also a computer forensics teacher at Oklahoma State University-Oklahoma City.

Thanks to his computer expertise, Flowers knows just where to look for child predators online. On Craigslist.org, he posted a picture of a teen girl along with an ad that stated,"Looking to hang out and get to know each other? Hit me up if ya want the same."

Deputies said John Opperman, a long-haul truck driver, thought he was talking to a 15-year-old girl named Lori and responded to the post. He drove from Iowa to the Yukon Walmart looking for sex. He found deputies waiting instead.

Daniel Cox, who deputies said was a reserve police officer, responded to the same ad.

According to court documents, Cox asked the fake 15-year-old to "send him a nude pic" and for her "bra and panty size.” The documents stated he then suggested they meet at the Yukon Library where agents arrested him.

“We're able to go out before people become victims,” said Flowers.

However, that is not always the case. Child pornography is constantly exchanged by pedophiles online.

“It’s very emotionally disturbing to look at children being exploited and raped,” Flowers shared.

Flowers tracked an upload of child porn from the home of Roger Kuhn in Norman.

When arrested, Kuhn admitted to molesting as many as 10 children -- some as young as 3 years old.

“I have two children, both little girls … When I take a monster off the street, that's one less person I have to worry about for my kids,” said Flowers.

Flowers said two of the worst offenders he has taken off the streets were Shannon Cohee and Stephen Christensen. Both allegedly took pictures as they molested local kids.

“When you meet the victim face-to-face, like Cohee and Christensen, it’s real emotional,” said Flowers.

Christensen allegedly took pictures as he tried to rape a toddler. Cohee, a local nurse, was sentenced to 27 years for what he did to a co-worker's 11-year-old daughter.

“He molested and raped her on web cam, and I was able to recover that,” said Flowers.

Flowers is now meeting with other law enforcement agencies, including the El Reno, Edmond and Shawnee police departments, hoping to spread his proactive and reactive approach to taking down child sex predators.

TAKING ON A WORLD WIDE WEB OF CHILD SEX PREDATORS... A CANADIAN COUNTY SHERIFF'S DEPUTY SPECIALIZES IN FINDING THEM... HE'S ARRESTED 30 SUSPECTS IN JUST THE LAST YEAR. NOW HIS METHODS ARE BECOMING A MODEL FOR OTHER AGENCIES... KOCO'S KIM PASSOTH IS HERE TO EXPLAIN. INVESTIGATORS SAY IT'S A DAILY BATTLE... AND MORE AND MORE LOCAL CHILD PREDATORS TURN TO THE INTERNET TO FIND THEIR VICTIMS. SO THEY HAVE TO ADAPT TO STOP THEM.... THE CANADIAN COUNTY SHERIFF'S DEPARTMENT IS TAKING A DEPUTY OFF THE STREET... AND PUTTING HIM ON THE COMPUTER FULL TIME. CLIP 12 17:43:26 i've taken em down in OKC, OK county, I've had them travel all the way from Iowa to meet me 17:43:31 ALL OF THESE ACCUSED CHILD PREDATORS... WERE BROUGHT DOWN BY ONE MAN... LT ADAM FLOWERS. 17:42:43 we are very successful 17:42:44 HE'S EVEN ARRESTED TWO IN ONE NIGHT... INCLUDING THIS FATHER OF THREE IN AN EL RENO MOVIE THEATER. 17:44:37 when i was 15 i started building computers 17:44:40 THE LIEUTENANT... WHO IS ALSO A COMPUTER FORENSICS TEACHER AT OSU OKC... KNOWS JUST WHERE TO LOOK. NATS: CRAIGSLIST ON CRAIGLIST... HE POSTED THIS AD: "Looking to hang out and get to know each other. Hit me up if ya want the same." ATTACHED TO THE AD - A PICTURE OF A TEEN GIRL. 18:00:25 started talking to me as he was driving from Iowa to here 18:00:28 DEPUTIES SAY JOHN OPPERMAN... A LONG HAUL TRUCK DRIVER... THOUGHT HE WAS TALKING TO A 15 YEAR OLD GIRL NAMED LORI. HE DROVE FROM IOWA TO THE YUKON WALMART LOOKING FOR SEX. INSTEAD HE FOUND DEPUTIES WAITING. DANIEL COX... WHO DEPUTIES SAY WAS A RESERVE POLICE OFFICER ... RESPONDED TO THE SAME AD. ACCORDING TO COURT DOCUMENTS... HE ASKED THE FAKE 15 YEAR OLD TO "send him a nude pic" AND FOR HER "bra and panty size"... HE THEN SUGGESTED THEY MEET AT THE YUKON LIBRARY... WHERE AGENTS ARRESTED HIM. 17:46:34 we're able to go out before people become victims 17:46:37 BUT THAT'S NOT ALWAYS THE CASE... CHILD PORNOGRAPHY... IS CONSTANTLY EXCHANGED BY PEDOPHILES ONLINE. 17:40:50 its very emotionally disturbing to look at children being exploited and raped 17:40:55 LT. FLOWERS TRACKED AN UPLOAD FROM THE HOME OF ROGER KUHN.... IN NORMAN. KUHN ADMITTED TO MOLESTING AS MANY AS 10 CHILDREN.... SOME AS YOUNG AS 3 YEARS OLD. 17:48:39 i have two children - both little girls 17:48:42 17:49:01 when i take a monster off the street that's one less person i have to worry about for my kids 17:49:07 THESE TWO MEN - - SHANNON COHEE... AND STEPHEN CHRISTENSEN... BOTH ALLEGEDLY TOOK PICTURES AS THEY MOLESTED LOCAL KIDS. 17:56:18 when you meet the victim face to face like cohee and christiensen its real emotional 17:56:24 CHRISTENSEN... ALLEGEDLY TOOK PICTURES AS HE TRIED TO RAPE A TODDLER... COHEE - A LOCAL NURSE - - WAS SENTENCED TO 27 YEARS FOR WHAT HE DID TO A CO- WORKERS 11 YEAR OLD DAUGHTER. 17:51:42 he molested and raped her on web cam and i was able to recover that 17:51:48 AND LT. FLOWERS IS NOW MEETING WITH OTHER LAW ENFORCEMENT AGENCIES INCLUDING EL RENO ... EDMOND ... AND SHAWNEE POLICE HOPING TO SPREAD HIS PROACTIVE AND REACTIVE APPROACH TO TAKING DOWN CHILD SEX PREDATORS. ... KP ... KOCO 5 NEWS.